A New Specimen of Thalattosauroidea (Reptilia, Thalattosauriformes) from the Middle Triassic (Ladinian) of Xingyi, Southernwestern China

Thalattosaurs (Thalattosauriformes) form a small clade of extinct diapsid marine reptiles (Nicholls, 1999; Rieppel et al., 2000). Due to the scarcity of fossils and their fragmentary nature, thalat...